google--adk-python/contributing/samples/integrations/agent_registry_agent/README.md

Agent Registry Sample

This sample demonstrates how to use the AgentRegistry client to discover agents and MCP servers registered in Google Cloud.

Setup

1. Ensure you have Google Cloud credentials configured (e.g., gcloud auth application-default login).
2. Set the following environment variables:

export GOOGLE_CLOUD_PROJECT=your-project-id
export GOOGLE_CLOUD_LOCATION=global  # or your specific region

3. Obtain the full resource names for the agents and MCP servers you want to use. You can do this by running the sample script once to list them:

   python3 agent.py
   

   Alternatively, use gcloud to list them:

   # For agents
   gcloud alpha agent-registry agents list --project=$GOOGLE_CLOUD_PROJECT --location=$GOOGLE_CLOUD_LOCATION
   
   # For MCP servers
   gcloud alpha agent-registry mcp-servers list --project=$GOOGLE_CLOUD_PROJECT --location=$GOOGLE_CLOUD_LOCATION
   

4. Replace AGENT_NAME and MCP_SERVER_NAME in agent.py with the last part of the resource names (e.g., if the name is projects/.../agents/my-agent, use my-agent).

Running the Sample

Run the sample script to list available agents and MCP servers:

python3 agent.py

How it Works

The sample uses AgentRegistry to:

• List registered agents using list_agents().
• List registered MCP servers using list_mcp_servers().
• Search registered agents using search_agents(search_string).
• Search registered MCP servers using search_mcp_servers(search_string).

It also shows (in comments) how to:

• Get a RemoteA2aAgent instance using get_remote_a2a_agent(name).
• Get an McpToolset instance using get_mcp_toolset(name).